Automatic temperature-regulator



F. OSBORN.

. AUTOMATIC TEMPERATURE. REGULATOR.

APPLICATION FiLlil) DEC.20, I919.

Patented Sept. 14,1920.

Swvcnfot Wiley, of Colorado,

the damper,

- in part set forth -which follows.

(UNITE v FRANK OSBORN, OF

gfs'rsnr AUTOMATIC TEMPERATURE-REGULATOR.

Be it known have invented a new. and u' seful Automatic Temperature-Regulator; and I do hereby declare the following to be a full, clear, and exact description of themvention, in the art to which it appertains to make and use the same.

of which the temperature of a room, or other inclosure,

smoke flue of a stove or the like.

One of the features of the nvention .the:

provision of a thermostat, or expansion bulb, situated near the smoke flue to receive the radiant heat therefrom, the thermostat, or

expansion bulb, automatically preventing the flue :from reaching a temperature in-i consistent with safety. Another feature of sion bulb, placed behind the first thermostat so'as to .beprotected from the radiant,

heat of the smoke flue but exposed to the heat of the room, so that this thermostat,

Another feature of combination of'the two thermostats sojthat the position'of the damper depends upon the set screws Another feature of the invention is to so; arrange the thermostatic elements that neither of the elements can entirely closethe cooperation of both being;

the resultant of thetwo temperatures.

necessary.

Another'object of the invention to pro-i vide a device of theabove nature, which is more sensitive to temperatureflchanges. than regulators now-in use.

Still another obj ect of the invention is to provide a regulator which is of few parts, simple in operation, readily attachedto the ordinary smoke flue damper'now in use. V

Other objects will be in part obvious and in the detailed description In the drawings :Figure 1 represents an elevation of the smoke flue and the thermosuch as will enable others skilled I, j draft therethrough. This invention. relates to anew and useful automatic temperature regulator, bymeans 1 may be automatically controlled by the position of a. damper located in the] he invention; is the provlsion of a second'thermostat,ior .expan-- and "consequently the :damper, is quickly. affected any changes of temperature in the room. I the invention is the and one which may be I staticallyfoontrolled operating mechanism attached thereto, the flue being partly broken away to show the damper. e a

Frice'f WILEY COLQRADO, Assrenon or ONE-HALF T0 enonenw. l

rrnnurgor GARDEN CITY, KANSAS. r i

Fig. 2 is a detail sectional view more I clearly showing how the support is clamped totheflue. Y

Referring to the drawings in detail, 1 designates the ordinary smoke flue of a stove or the like, in which ;is pivotally mounted the damper 2, for controlling the the damper shaft is an arm 3, pivotally.

connected 1 at its lower end to alink 4:.

Link at pivotally connects at its outer end, with the lowerend of a lever.,5 mounted. on' the stan I cured to the supporting bar 7 The support -7may consist Zontal members rigidly, but removably, clamped tothe smoke flue .by means ofbolt 15 Upright 8 isv adjustably mounted on the horizontal; supporting bar by means of a set, screw 9 and carries at its upper end a thermostat or expansible bulb 10. 'Op posed to the expansiblebulb 10 is another 'expansible bulb 11, the two bulbs being connected by means of a rod 11 .The expansible bulb 11 carries a tube 13, which telescopically receives the rod 12 pivotally secured to the upper end of the'lever 5. Rod means of a set screw 14.

It will be seen from the above, that the. expansible bulbs may be adjusted with respect to the smoke flue, by simply loosening 9 and 14,.placing the'bulbsin the desiredposition, and then setting upon the set screws.

T he operation of the device is as follows. The damper is shown-wide open and both expansible bulbs contracted. Now, when thetemperature of the smoke flue increases, the increased radiant heat-therefrom will act directlyon the bulb 11, causing the fluid thereinto expand and move the upper arm of lever 5 to the left, as shown in dotted lines on the drawing, and thereby partly close the damper. This increase in the radiant heat has had no effect on the expansible bulb 10, however, for it will be noticed that this bulb is shielded from the radiant heat by being placed directly behind the bulb 11. If now, the temperature of the room rises, then the increased heat will,

through the expansion of the fluid within the dard 6, which-in turn is rigidly sei of two hori- .85 12 .is adjusted within tube 13 by 1 65 Rigidly attached to T V bulb, cause a further closing of the damper. It will be. evident now that the position of the damper is not controlled by the radiant heat of the smoke flue alone, or by the heat of the room alone, but by the resultant of the two.

The details ofconstruction may be subjected 'to alterations falling within the scope of what is claimed.

Having fully described my invention what I desire to claim as new and to secure by Letters Patent is l. A temperature regulator including a heat radiating element, a damper therefor, means for controlling said damper, said means including a plurality of thermostats, one of said thermostats exposed to radiant heat from said element and shielding another thermostat from said radiant heat.

2. A temperature regulator including a heat radiating element, a damper therefor,

means for controlling said damper, said means including a plurality of thermostats, oneof'said thermostats being exposed to 'radiant'hea't from said element and shielding another thermostat from said radiant heat, said last named thermostat being exposed to other than radiant heat.

3. A. temperature regulator including a heat radiating element, a damper therefor, means for controlling said damper, said means including a plurality of thermostats, one of said thermostats so constructed and arranged as to be incapable of entirely closing said damper.

4;. A device of the character described including a flue, and a damper therefor, means for controllingsaid damper, said means including two thermostats, one of said thermo'sta'ts so constructed and arranged as to be incapable of entirely closing said damper.

5. A device of the character describedin cluding a heat radiating element, a damper therefor, means for controlling said damper, said means comprising a plurality of thermostats, each of said thermostats being in capable of entirely closing said damper.

6. A temperature regulator including a heat radiating element and a damper. therefor, means for controlling said damper, said means including a plurality of thermostats, one of said thermostats being exposed to radiant heat from said element, another of said thermostats protected therefrom, one

of .these thermostats constructed and arranged so as to be incapable of entirely closing said damper.

7. A temperature regulator including a thermostats being independently incapable of entirely closing said damper.

8. A temperature regulator including a damper, means for controlhng sa d damper,"

said means including two" thermostats, one

of said thermostats being shielded from radiant'heat, the other of said thermostats being exposed thereto, the construction and arrangement being such thatthe combined action of the two thermostats is necessary to entirely close said damper.

9. A temperature regulator including a heat radiating element, a damper therefor,

means for controlling said damper, said means including a plurality of thermostats, one of said thermostats exposed to radiant heat from said element and shieldinganother of said' thermostats from said radiant heat, the construction and arrangement being such that each of said thermostats is independently said damper. 7 I

10. A device of the character described comprising a flueand a damper therefor, said flue carrying a horizontal supporting incapable of entirely closing member, said supporting member carrying a two uprights,one o fsaid uprights having a lever mounted thereon operatively connected with the damper, the other upright carrying athermostatic element, said thermostatic-- element being connected to the lever by telesco ically adjustable members.

' 11. comprising a flue and a damper therefor, asupporting member adjacent said line, saidsupporting member carrying two arms, one of said arms-having a lever mounted thereon, said lever being operatively connected to the damper, the other arm slidably and adjustablymounted' on the supporting member and carrying athermostatic-element, said thermostatic element being connected to said lever by telescopically adj RS131 able members.

Signed at Washington, 'D. (1., this 20th day of December,19l9.

device: of the character described FRANK osBoRn 

